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|
get_all_instanceids()
{
aws ec2 describe-instances | grep -i InstanceId \
| while read a b ; do
x=${b#*\"}
echo "${x%\"*}"
done
}
do_stop_on_fail=0
fail()
{
echo "$prog failed: $*" 1>&2
[ "$do_stop_on_fail" = 1 ] && stop_instanceids "$(get_all_instanceids)"
exit 1
}
describe()
{
local instanceid="$1"
local what="$2"
aws ec2 describe-instances --instance-ids "$instanceid" --output text \
--query "Reservations[*].Instances[*].$what" \
|| fail "getting $what"
}
get_address()
{
local instanceid="$1"
describe "$instanceid" PublicIpAddress \
|| fail "getting address for $instanceid"
}
get_state()
{
local instanceid="$1"
describe "$instanceid" State.Name \
|| fail "getting state for $instanceid"
}
get_tags()
{
local instanceid="$1"
describe "$instanceid" Tags \
|| fail "getting tags for $instanceid"
}
wait_for_state()
{
local instanceid="$1"
local wanted_state="$2"
i=200
while [ $i -gt 0 ] ; do
state=$(get_state "$instanceid")
echo "$instanceid is $state"
if [ "$state" = "$wanted_state" ] ; then
return 0
fi
sleep 10
i=$((i-10))
echo $i
done
return 1
}
signal_to_stop()
{
local instanceid="$1"
state=$(get_state $instanceid)
[ "$state" = "stopped" ] && return
[ "$state" = "terminated" ] && return
[ "$state" = "running" ] \
|| fail "unknown state for $instanceid: $state"
echo "$instanceid is running, telling it to stop"
aws ec2 stop-instances --instance-ids "$instanceid" \
|| fail "stop instance $instanceid"
}
signal_to_start()
{
local instanceid="$1"
state=$(get_state $instanceid)
if [ "$state" = "running" ] ; then
true
elif [ "$state" = "pending" ] ; then
echo "$instanceid is already $state"
elif [ "$state" = "stopped" ] ; then
echo "$instanceid is stopped, telling it to start"
aws ec2 start-instances --instance-ids "$instanceid" \
|| fail "start instance $instanceid"
else
fail "$instanceid is not stopped: $state"
fi
}
stop_instanceids()
{
local instanceids="$1"
do_stop_on_fail=0
echo "$instanceids" | while read i ; do
signal_to_stop "$i"
done
echo "$instanceids" | while read i ; do
wait_for_state "$i" stopped
done
stopping=0
}
start_instanceids()
{
local instanceids="$1"
do_stop_on_fail=1
echo "$instanceids" | while read i ; do
signal_to_start "$i"
done
echo "$instanceids" | while read i ; do
wait_for_state "$i" running
done
}
restart_instanceids()
{
local instanceids="$1"
stop_instanceids "$instanceids"
start_instanceids "$instanceids"
}
get_details()
{
local instanceids="$1"
details=$(echo "$instanceids" | while read i ; do
ip_address=$(get_address $i)
tags=$(get_tags $i)
echo $i $ip_address $tags
done)
echo "$details"
}
get_summary()
{
local instanceids="$1"
details=$(get_details "$instanceids")
windows=$(echo "$details" | grep windows | cut -f 2 -d " ")
freebsd=$(echo "$details" | grep freebsd | cut -f 2 -d " ")
netbsd=$(echo "$details" | grep netbsd | cut -f 2 -d " ")
debian=$(echo "$details" | grep debian | cut -f 2 -d " ")
echo "freebsd: $freebsd"
echo " netbsd: $netbsd"
echo " debian: $debian"
echo "windows: $windows"
}
get_states()
{
echo "$instanceids" | while read i ; do
get_state "$i"
done
}
|
